Tip-up signal for fishing



FIG. 1 is a top, front and left side perspective view of a tip-up signal for fishing showing my new design;

FIG. 2 is a left side elevational view thereof, the right side elevational view being the identical mirror image thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a tip-up signal for fishing, as shown and described. 